Yamaha HTY-7040 Service Manual page 88

A B C
YSP-4000/YSP-40D/HTY-7040
AMP 2/2
1
IC511, 513, 516: YDA141-SZ
IC512, 514, 515: L6732TR
Sound projector Adjustable step-down controller with synchronous rectification
Vcc=4.5V-14V
Quarts Crystal circuit
Microprocessor
SO is bus connected by /CS. Microprocessor interface complies with EVE.
IRQ terminals are connected in
OCH
daisy chain, forming an OR circuit. OCL
Speaker A~H 8 9
Chip#15 XIN XOUT
WCK fs=32/44 /48k*2 DAT[15:0]
OUTPC
WCK WCK2
OUTMC
BCK LT[9:0] Monitor
TI/DSP
DSI[3:0] AMHOP 6 Protection and Ref
FSHOP[1:0]
SS
GAINA[1:0]
GAING[1:0]
DIR MCK ENABLE[7:0] OSC
MCK=24 576MHz
2 SPCHK
Fixed D4_core 7
/OCPO[7:0]
EAREF
/SPERR[7:0]
/UVLC
/CKDET 1
8ch D4 0.6V +
–
SA_DSP /OTP PGOOD
DAC & PDD Amp
/OTW
Beam & NoiseShaper
CH_A~H
MASKUVLO
DAC-I,J 2
MASKCKDET
MASKOTP SYNCH
MASKOTW
MASKOCP
TESTOTP
TESTOCP
DACENABLE[1:0]
PWMSW
/TEST
/TRIDET
DEGLITCH
EXT[0:1]
CLKC
CLKC
For DAC monitor
To be modified if there are many SDC latches
Chip#14 XIN
CLKC D4-SPJ
3
Bus connected to
microprocessor
Chip#0 XIN
CLKC D4-SPJ
IC510: TC7SHU04FU
Inverter
NC 1 5 VCC
4
A Y
IN A 2
L H
GND 3 4 OUT Y H L
5
IC510
6
CB509
7
CB510
CB511
8
CB512
9
10
# All voltages are measured with a 10MΩ/V DC electronic voltmeter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
88
D E F
Vin=1.8V-14V
VCCDR
16 15
12
LDO
BOOT
11
HGATE
10
PHASE
V OUT
14
– LGATE
+
PWM
13
E/A PGND
+ –
3
GND
4 5
FB COMP
5.0 11.1
5.1
5.1
5.1
0
0
0
0
IC512
0
No replacement part available.
サービス部品供給なし
5.1
5.1
5.0 5.0
0.2 D/A Converter
0
and
5.0
0
Digital AMP.
0.2
0
8 ch output
0.2
0
5.0
0
IC511
0.2
0
0.2
0
5.0
0
0.2
4.9
CENTER
0
SURROUND
2.4
FRONT
2.4
0
G H I
5.0 11.1
0
5.0
2.9
5.0
5.0
IC514
12.1
7.0
12.1
No replacement part available.
5.1 4.9
サービス部品供給なし
5.1
5.1 5.1
5.1
5.0
5.0
5.0 5.0
3.3
0
0
0.2 0.2 D/A Converter
0
0
and
5.0 5.0
0 0
Digital AMP.
0.2
0.2
0 0
8 ch output
0.2
0.2
0 0
5.0 5.0
0
0
CB513
0.2 0.2
0
0
0.2 0.2
0 0
5.0 5.0
0
0
0.2 0.2
4.9 4.9
CENTER
0 0
SURROUND
2.4
2.4
FRONT
0 2.4
4.8
0
J K L
5.0 11.1
0
5.0
2.9
5.0
5.0
IC515
12.1
7.0
12.1
No replacement part available.
サービス部品供給なし
5.1 4.9
5.1
5.1 5.1
5.1
5.0
5.0
5.0 5.0
3.3
0
0
0.2 0.2 D/A Converter
0
0
5.0 5.0
0 0
0.2
0.2
0 0
0.2
0.2
0 0
5.0 5.0
0
0
0.2 0.2
0
0
0.2 0.2
0 0
5.0 5.0
0 0
0.2 0.2
4.9 4.9
CENTER
0 0
SURROUND
2.4 2.4
FRONT
0 2.4
4.8
0
M N
W502
0
5.0
2.9
5.0
5.0
12.1
7.0
12.1
5.1 4.9
5.1 5.1
5.0 5.0
3.3
0
0
0.2
0
and
5.0
0
Digital AMP.
0.2
0
8 ch output
0.2
0
5.0
0
CB516
0.2
0
1.2
0
5.0
0
0.2
4.9
0
2.4
0
4.8